diff --git a/Motion/app/src/main/java/com/example/android/motion/demo/loading/LoadingActivity.kt b/Motion/app/src/main/java/com/example/android/motion/demo/loading/LoadingActivity.kt
index 92080a32..c26ce2e5 100644
--- a/Motion/app/src/main/java/com/example/android/motion/demo/loading/LoadingActivity.kt
+++ b/Motion/app/src/main/java/com/example/android/motion/demo/loading/LoadingActivity.kt
@@ -87,7 +87,7 @@ class LoadingActivity : AppCompatActivity() {
         }
     }
 
-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
         menuInflater.inflate(R.menu.loading, menu)
         return super.onCreateOptionsMenu(menu)
     }
diff --git a/Motion/app/src/main/java/com/example/android/motion/demo/stagger/StaggerActivity.kt b/Motion/app/src/main/java/com/example/android/motion/demo/stagger/StaggerActivity.kt
index ea80e70d..cc42081d 100644
--- a/Motion/app/src/main/java/com/example/android/motion/demo/stagger/StaggerActivity.kt
+++ b/Motion/app/src/main/java/com/example/android/motion/demo/stagger/StaggerActivity.kt
@@ -77,7 +77,7 @@ class StaggerActivity : AppCompatActivity() {
         }
     }
 
-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
         menuInflater.inflate(R.menu.stagger, menu)
         return super.onCreateOptionsMenu(menu)
     }